/**
 * Copyright (c) 2011 ~ 2014 Deepin, Inc.
 *               2013 ~ 2014 jouyouyun
 *
 * Author:      jouyouyun <jouyouwen717@gmail.com>
 * Maintainer:  jouyouyun <jouyouwen717@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 **/

/*#include <stdio.h>*/
#include <time.h>
#include <unistd.h>
#include <crypt.h>
#include "mkpasswd.h"

char *
mkpasswd (const char *words)
{
    unsigned long seed[2];
    char salt[] = "$6$........";
    const char *const seedchars =
        "./0123456789ABCDEFGHIJKLMNOPQRST"
        "UVWXYZabcdefghijklmnopqrstuvwxyz";
    char *password;
    int i;

    /* Generate a (not very) random seed.
       You should do it better than this... */
    seed[0] = time(NULL);
    seed[1] = getpid() ^ (seed[0] >> 14 & 0x30000);

    /* Turn it into printable characters from `seedchars'. */
    for (i = 0; i < 8; i++) {
        salt[3+i] = seedchars[(seed[i / 5] >> (i % 5) * 6) & 0x3f];
    }

    // DES Encrypt
    password = crypt(words, salt);

    return password;
}

/*
int
main(int argc, char *argv[])
{
    if (argc != 2 ) {
        printf("args error\n");
        return -1;
    }

    char *passwd = mkpasswd(argv[1]);
    printf("mkpasswd: %s\n", passwd);

    return 0;
}
*/
